Geothermal Plastic Piping Systems Certification
Most U.S. state and Canadian province drinking water regulations require pipes and fittings conveying drinking water to meet the requirements of NSF/ANSI/CAN 61 to ensure components will not contribute harmful levels of contaminants to the drinking water.
What is NSF/ANSI/CAN 61?
NSF/ANSI/CAN 61: Drinking Water System Components -Health Effects is the American National Standard and the Canadian National Standard that establishes the health effects requirements for chemical contaminants and impurities that are indirectly imparted to drinking water from products, components, and materials used in drinking water systems.
How do I know if HDPE pipes or fittings meet this NSF requirement?
HDPE pipes or fittings certified by NSF will bear either the NSF®-61 mark or the NSF® pw (potable water) mark on the print string. The NSF® pw mark indicates the product meets the health requirements of NSF/ANSI/CAN 61 as well as performance, long-term strength, and quality control requirements in NSF/ANSI 14: Plastic Piping Components and Related Materials.
Learn more about our materials and ingredients services
Verify the compliance of materials and ingredients with both North American and international standards.
How NSF Can Help You
What’s New with NSF
Information Systems Security Association (ISSA) Welcomes NSF’s Brian Schultz into the 2026 Hall of Fame
September 10, 2026Lifetime achievement recognition honors exceptional leadership and lasting contributions to the cybersecurity profession.NSF Welcomes Nicole Parent Haughey to Board of Directors
September 10, 2026NSF's appointment of Nicole supports the organization's continued focus on long-term growth and transformation.
NSF Launches Independent Certification Standard for Compact Products
August 25, 2026New third-party certification verifies products cutting materials and shipping impacts while maintaining safety and performance.
CELSIUS® Products Earn NSF Certified for Sport® Certification
August 20, 2026CELSIUS® has earned NSF Certified for Sport® certification for select products, including the CELSIUS VIBES line, reinforcing the brand’s commitment to quality, transparency and consumer trust.